Examine source code of SaverHTML

{
  "author": "Reebal Javed Khan",
  "browser_action": {
    "browser_style": false,
    "default_icon": {
      "16": "icons/favicon.ico"
    },
    "default_title": "Saver"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "zokemore@zokemore.ml",
      "strict_min_version": "56.0"
    }
  },
  "description": "save html pages",
  "icons": {
    "16": "icons/favicon.ico"
  },
  "manifest_version": 2,
  "name": "Saver",
  "permissions": [
    "privacy",
    "tabs",
    "downloads",
    "<all_urls>"
  ],
  "short_name": "Saver",
  "version": "1.0",
  "background": {
    "scripts": [
      "saver.js"
    ]
  }
}